Amico Dome Loaded Manifold Nema-4 NFPA - Manual (Page 8)

8 Amico Pipeline
DUAL LINE REGULATOR
On every Amico Automatic Gas Manifold the line regulator is capable of main-
taining a constant dynamic delivery of pressure at the maximum designed
fl ow rate of the system. For Oxygen, Nitrous Oxide, Medical Air and Carbon
Dioxide service, the line regulators are factory preset @ 55psi and for Nitro-
gen its 170psi.
PRESSURE RELIEF VALVE
Pressure relief valves are installed downstream of all pressure regulators and
are set at no more than 50% above the setting of the pressure regulator.
Relief valves are capable of fully relieving the pressure at the set point. All
pressure relief valves in the manifold have piping connections to allow for con-
nection of a vent line to the outside of the facility.
PILOT REGULATOR
A single stage, diaphragm type, relieving regulator used to limit the amount
of pressure provided to the domes of the bank regulator. Used only on Ni-
trogen manifolds and manifolds with 100 PSI delivery pressure.
SOLENOID VALVE
A 12 VDC, solenoid assembly used to direct dome bias pressure to one of the
bank regulators. As dome bias pressure is directed to one of the bank regula-
tors, dome pressure of the other bank regulator is vented through an exhaust
in the solenoid valve.
Quarter-turn ball valves are provided upstream and downstream of each line
regulator. These valves allow for removal and servicing of one line the regu-
lator while the other is in use. All four ball valves are normally in the open
position.
LINE REGULATOR BALL VALVE
Description of Parts
POWER SUPPLY